How Do I Stay Sexually Pure in an Impure World?

I am a Christian who has been in a relationship for over a year now, and we are not married yet.  I want so badly to do what God says in the Bible is right in my relationship, mainly saving sex and sexual activities for marriage.  However, this world and human nature make it so difficult to resist.  Not only am I bombarded with sexual media everyday, but our society now accepts premarital sex as something that is okay.  They make sex so attractive, and even God designed sex to be such a pleasing thing.  I also have human nature, which is telling me that my clock is ticking and I need to do something to secure that my genes are passed on.  It seems like everyone and everything is working against me.

I want to know, how do people like me, who want to do the right thing but are struggling with it, stay pure?  What practices can I put into place when the temptation is so high?  And if you have crossed the line already, how do you back up with your significant other?

Take from www.revelife.com